What will come in place of the question mark (?) in the following equation if '+' means '×', '×' means '−', '−' means '÷' and '÷' means '+'?
18÷4+3×2−2=?
- A19
- B30
- C29
- D28
Solution & Step-by-step Explanation
Given sign conversions:
÷→+
+→×
×→−
−→÷
Substituting these signs into the given expression:
18+4×3−2÷2
Now, apply the BODMAS rule (Division, Multiplication, Addition, Subtraction):
Division: 2÷2=1
Expression becomes: 18+4×3−1
Multiplication: 4×3=12
Expression becomes: 18+12−1
Addition: 18+12=30
Expression becomes: 30−1
Subtraction: 30−1=29
Thus, the value is 29.
÷→+
+→×
×→−
−→÷
Substituting these signs into the given expression:
18+4×3−2÷2
Now, apply the BODMAS rule (Division, Multiplication, Addition, Subtraction):
Division: 2÷2=1
Expression becomes: 18+4×3−1
Multiplication: 4×3=12
Expression becomes: 18+12−1
Addition: 18+12=30
Expression becomes: 30−1
Subtraction: 30−1=29
Thus, the value is 29.